4. 'Indiana Jones and the Kingdom of the Crystal Skull'
A fourth Indiana Jones was the stuff of Internet rumors and playground gossip for years before it became a reality. To paraphrase the great Dr. Ian Malcom from an earlier, much better Steven Spielberg movie, "They were so preoccupied with whether or not they could that they didn't stop to think if they should." The screenplay just wasn't there, and bringing in Shia LaBeouf as Indy's long-lost son was a critical error. "I feel like I dropped the ball on the legacy that people loved and cherished," LeBeouf said in 2010. "We [Harrison Ford and LaBeouf] had major discussions. He wasn't happy with it either. Look, the movie could have been updated. There was a reason it wasn't universally accepted." It was a rare instance of an actor being honest about a botched movie, and he quickly lived to regret saying it. But he wasn't wrong.